Cory Booker! (Cue narrator of old "Superman" TV show.) He's hip! He's cool! He has more Twitter followers than God! Races into burning buildings! Rescues freezing dogs! More than a one-man department of city services, he's setting the bar for elected ...http://www.nbcnews.com/technology/technolog/5-twitter-tips-super-mayor-cory-book...